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Non‐destructive assessment of retaining wall of former coal mine plant
Author(s) -
Wiggenhauser Herbert,
Behrens Matthias,
Moser Dorothee,
Moryson Ralf M.,
Pudovikov Sergey,
Herrmann HansGeorg
Publication year - 2018
Publication title -
mauerwerk
Language(s) - English
Resource type - Journals
eISSN - 1437-1022
pISSN - 1432-3427
DOI - 10.1002/dama.201700021
Subject(s) - ground penetrating radar , nondestructive testing , geotechnical engineering , engineering , coal mining , structural engineering , penetration (warfare) , retaining wall , geology , shell (structure) , radar , mining engineering , coal , civil engineering , waste management , telecommunications , medicine , operations research , radiology
A large retaining wall (appr. 9 m high and 286 m long) of a former coal mine has been investigated using Ground Penetrating Radar (GPR), with two low frequency antennas (200 and 400 MHz), and Large Aperture UltraSound (LAUS) to gather information about the condition and inner structure of the wall. Three vertical lines were selected in representative areas of the wall to evaluate the usefulness of Non‐Destructive Testing (NDT) with these two methods. The LAUS results showed the layer structure at one line where the wall was enforced by a concrete shell and were unspecific regarding the inner structure beyond the first layer. GPR results were able to be collected much faster and showed some internal features. Penetration was limited to 2–3 m due to the high absorption in the material.